{"product_id":"seikoセイコー-72s-56-grand-seiko-56グランドセイコー-cal-5646a","title":"SEIKO 72's \/ 56 GRAND SEIKO \/ Cal.5646A","description":"\u003ctable width=\"100%\" border=\"1\" style=\"width: 100%; height: 548.625px;\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003cth style=\"width: 99.6455%; height: 19.5938px;\" colspan=\"2\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cb\u003e\u003cspan style=\"color: #0f000d;\" color=\"#0F000D\"\u003eProduct Details\u003c\/span\u003e\u003c\/b\u003e\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003cth style=\"width: 6.26139%; height: 39.1875px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eManufacturing Era\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.3841%; height: 39.1875px;\" bgcolor=\"#FFFEFC\"\u003e\n\n\u003cp\u003e1972\u003c\/p\u003e\n\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\n\u003cth style=\"width: 6.26139%; height: 58.7812px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eMovement\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.3841%; height: 58.7812px;\" bgcolor=\"#FFFEFC\"\u003e\n\n\u003cspan lang=\"EN-US\"\u003eCal.5646A \/ Automatic \/ 25 Jewels\u003c\/span\u003e\u003cbr\u003e\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\n\u003cth style=\"width: 6.26139%; height: 58.7812px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eCase Size\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.3841%; height: 58.7812px;\" bgcolor=\"#FFFEFC\"\u003e\n\n\u003cp\u003e\u003cspan\u003eLength 40.9mm (including lugs) \/ Width 37.3mm (including crown) \/ Thickness 12.4mm \/ Lug width 18mm \/ Weight 50g (including strap)\u003c\/span\u003e\u003c\/p\u003e\n\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\n\u003cth style=\"width: 6.26139%; height: 58.7812px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eCase Material\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.3841%; height: 58.7812px; text-align: left;\" bgcolor=\"#FFFEFC\"\u003e SS (Stainless Steel)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003cth style=\"width: 6.26139%; height: 39.1875px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eAccessories\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.3841%; height: 39.1875px;\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eWatch unit \/ RESUME original case \/ Our store warranty (1-year free warranty)\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003cth style=\"width: 6.26139%; height: 19.5938px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eCondition\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.3841%; height: 19.5938px;\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003e Antique (Pre-owned) \u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003cth style=\"width: 6.26139%; height: 39.1875px;\" align=\"center\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003eWater Resistance\u003c\/span\u003e\u003c\/th\u003e\n\n\u003ctd style=\"width: 93.3841%; height: 39.1875px;\" bgcolor=\"#FFFEFC\"\u003e\u003cspan style=\"color: #0f000d; font-size: small;\" size=\"2\" color=\"#0F000D\"\u003e Non-waterproof \u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 215.531px;\"\u003e\n\n\u003ctd style=\"width: 6.26139%; height: 215.531px;\" align=\"center\"\u003eNote\u003c\/td\u003e\n\n\u003ctd style=\"width: 93.3841%; height: 215.531px;\"\u003e*This product will be overhauled after your order is placed, so shipping will take approximately 1–2 months. Thank you for your understanding.\u003cbr\u003e\u003cbr\u003e*The color may appear slightly different on your screen compared to the actual product. Thank you for your understanding.\u003cbr\u003e\u003cbr\u003e*This item is also sold in our store. While we update our inventory regularly, the item may occasionally be out of stock. If it is no longer available and cannot be restocked, we may have to cancel your order. Thank you for your understanding in advance.\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eIntroducing the 1972 Seiko \"56 Grand Seiko.\"\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003eGrand Seiko was launched in 1960 with the ambition of creating \"a high-precision, high-quality watch that can compete on the world stage.\"\u003cbr\u003eSince then, it has continued to pursue precision while responding to the evolving demands for wristwatches over the decades.\u003cbr\u003e\u003cbr\u003eThe 56GS, introduced in 1970, was a series born in an era when watches that were lighter, thinner, smaller, and easier to use were in demand.\u003cbr\u003eIt achieved a slim profile while maintaining high-precision automatic movement, finished in a clean design that rests lightly on the wrist.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e■ Dial \u0026amp; Case Design\u003c\/strong\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003eThe deep green dial features an impressive gradient that brightens toward the center, with darker tones spreading toward the periphery.\u003cbr\u003eA delicate vertical brush finish catches the light, giving the dial different expressions depending on the viewing angle.\u003cbr\u003e\u003cbr\u003eThree-dimensional bar indices and slender hands tapering at the tips enhance its refined look, while the inner dot minute track provides a cohesive finish. It features a day-date display at the 3 o'clock position.\u003cbr\u003e\u003cbr\u003eThe faceted glass crystal covering the dial is another highlight of this model.\u003cbr\u003eThe multi-faceted glass reflects light from various angles, accentuating the green dial and the sharp lines of the case.\u003cbr\u003e\u003cbr\u003eThe design combines a rounded bezel with an angular case and wide lugs.\u003cbr\u003eIt features a form that utilizes flat surfaces, following in the tradition of the Seiko Style. The interplay between mirror-polished and brushed surfaces highlights the contours, resonating with the brilliance of the faceted glass. The GS logo on the crown is a detail that reflects the meticulous attention paid to even the smallest elements.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003e■ Movement\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0762\/8980\/2535\/files\/2026-10-17T200233.483.png?v=1792235755\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe movement is equipped with the automatic Cal. 5646A, a high-beat movement with 28,800 vibrations per hour and 25 jewels.\u003cbr\u003eIt includes a day-date function, reflecting the characteristic focus of the 56GS on high precision as a mechanical timepiece.\u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cbr\u003e■ Styling\u003cbr\u003e\u003c\/strong\u003e\u003cspan lang=\"EN-US\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCase size: Length 40.9mm (including lugs) \/ Width 37.3mm (including crown) \/ Thickness 12.4mm \/ Weight 50g (including strap)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe deep green dial and brown embossed strap add a calm color accent to your attire.\u003cbr\u003ePair it with a navy jacket, an ecru shirt or knit, and greige slacks to let the green of the dial subtly stand out, while the brown of the strap blends in naturally.\u003cbr\u003e\u003cbr\u003eThis piece is easy to pair not only with jacket styles but also with casual holiday outfits centered around knits or shirts, adding a vintage elegance to your wrist.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e■ Condition\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\n\u003cdiv class=\"\"\u003e\n\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden @[53.5rem]\/main:[--thread-content-max-width:48rem] relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\"\u003e\n\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\n\u003cdiv class=\"LR5Y_W_content markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\n\u003cp data-pm-slice=\"1 1 []\"\u003eThe case shows minor scratches consistent with use, but there is no significant damage, and it remains in good overall condition.\u003cbr\u003eThe movement is currently operating smoothly.\u003cbr\u003e\u003cbr\u003eThe faceted glass crystal is an aftermarket part, but it has been replaced with a new one.\u003cbr\u003eThe strap is also not original to this specific model, but it is a genuine Seiko strap. The buckle is original, creating a cohesive combination for the wrist.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c\/section\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan lang=\"EN-US\"\u003e\u003cstrong\u003e■ For Your Peace of Mind\u003cbr\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cspan\u003eAll watches handled by our store undergo internal inspection by professional watchmakers upon arrival and are sold only after being verified as authentic, so you can shop with confidence.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWhen you purchase a watch, we will deliver it with a new leather strap.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePlease select your preferred color from the order tab.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e*If a watch comes with a genuine manufacturer strap or a metal band, the leather strap will not be installed but will be sent separately as a spare.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWe will also provide a dedicated watch case with your shipment.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"layout-grid-mode: char; mso-layout-grid-align: none;\" class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan style=\"color: #ff0000; font-size: xx-small;\" size=\"1\" color=\"#ff0000\"\u003e● Important Information Regarding Antique Watch Purchases ●\u003cbr\u003e\u003cbr\u003eAt RESUME, when selling antique watches, we do not ship immediately upon order. Instead, we commission a professional craftsman to perform an overhaul (OH), and the watch will be shipped after the overhaul is complete (approx. 1–2 months).\u003cbr\u003e\u003cbr\u003eA certified first-class watch repair technician will completely disassemble the watch, replace consumable parts such as internal gaskets, clean and lubricate it, and ensure it is serviced to maintain a daily accuracy of within ±1 minute.\u003cbr\u003eUpon delivery, we will include our original OH certificate, which details the work performed, along with photos of the watch disassembled during the maintenance process.\u003cbr\u003e\u003cbr\u003eWhile these are pre-owned items and we cannot guarantee that they will never break, we take these steps to ensure you can enjoy the original performance of the timepiece and use it with peace of mind.\u003cbr\u003e\u003cbr\u003eWe offer a 1-year warranty period for our products depending on the model. Even after the period expires, we are happy to provide repair services for a fee. Please feel free to consult us even if there is no repair shop nearby.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"RESUME","offers":[{"title":"Scotchgard: Black","offer_id":52355267002663,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"Scotchgard: Brown","offer_id":52355267035431,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"Scotchgard: Navy","offer_id":52355267068199,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"Scotchgard: Wine","offer_id":52355267100967,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"Scotchgard: Chestnut","offer_id":52355267133735,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"MIMOSA: Black","offer_id":52355267166503,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"MIMOSA: Grey","offer_id":52355267199271,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"MIMOSA: Brown","offer_id":52355267232039,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"MIMOSA: Dark Brown","offer_id":52355267264807,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"KID: Black","offer_id":52355267297575,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"KID: Khaki","offer_id":52355267330343,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"KID: Orc","offer_id":52355267363111,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"KID: Wine","offer_id":52355267395879,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true},{"title":"KID: Dark Brown","offer_id":52355267428647,"sku":null,"price":371800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0762\/8980\/2535\/files\/2026-10-17T200611.212.png?v=1792235740","url":"https:\/\/vintage-watch-resume.com\/en\/products\/seiko%e3%82%bb%e3%82%a4%e3%82%b3%e3%83%bc-72s-56-grand-seiko-56%e3%82%b0%e3%83%a9%e3%83%b3%e3%83%89%e3%82%bb%e3%82%a4%e3%82%b3%e3%83%bc-cal-5646a","provider":"RESUME","version":"1.0","type":"link"}